In this study, the effects of small-scale of the both nanoflow and nanostructure on the vibrational re- sponse of fluid flowing single-walled carbon nanotubes are investigated. To this purpose, two various flowing fluids, the air-nano-flow and the water nano-flow using Knudsen number, and two different continuum theories, the nonlocal theory and the strain-inertia gradient theory are studied. Nano-rod model is used to model the fluid-structure interaction, and Galerkin method of weighted residual is utilizing to solve and discretize the governing obtained equations. It is found that the critical flow ve- locity decreases as the wave number increases, excluding the first mode divergence that it has the least value among of the other instabilities if the strain-inertia gradient theory is employed. Moreover, it is observed that Kn effect has considerable impact on the reduction of critical velocities especially for the air-flow flowing throughthe CNT. In addition, by increasing a nonlocal parameter and Knudsen number the critical flow velocity decreases but it increasesas the characteristic length related to the strain-inertia gradient theory increases.
کلید واژگان :Longitudinal vibration Nonlocal theory Strain-inertiagradienttheory Knudsen number Nano-flow Vibration instability
ارزش ریالی : 1200000 ریال
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